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- (djm) [configure.ac] Fix broken test for gcc >= 4.4 with per-compiler 

flag tests that don't depend on gcc version at all; suggested by and
   ok dtucker@
This commit is contained in:
Damien Miller 2011-01-12 16:00:37 +11:00
parent 945aa0c744
commit 134d02a494
2 changed files with 28 additions and 7 deletions
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3
ChangeLog
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@ -15,6 +15,9 @@
"looks ok" tedu@ feedback guenther@
- (djm) [configure.ac] Turn on -Wno-unused-result for gcc >= 4.4 to avoid
silly warnings on write() calls we don't care succeed or not.
- (djm) [configure.ac] Fix broken test for gcc >= 4.4 with per-compiler
flag tests that don't depend on gcc version at all; suggested by and
ok dtucker@
20110111
- (tim) [regress/host-expand.sh] Fix for building outside of read only

32
configure.ac
View File

@ -1,4 +1,4 @@
# $Id: configure.ac,v 1.462 2011/01/12 02:34:02 djm Exp $
# $Id: configure.ac,v 1.463 2011/01/12 05:00:39 djm Exp $
#
# Copyright (c) 1999-2004 Damien Miller
#
@ -15,9 +15,21 @@
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
AC_INIT(OpenSSH, Portable, openssh-unix-dev@mindrot.org)
AC_REVISION($Revision: 1.462 $)
AC_REVISION($Revision: 1.463 $)
AC_CONFIG_SRCDIR([ssh.c])
# local macros
AC_DEFUN([OPENSSH_CHECK_CFLAG_COMPILE], [{
AC_MSG_CHECKING([if $CC supports $1])
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $1"
AC_COMPILE_IFELSE([void main(void) { return 0; }],
[ AC_MSG_RESULT(yes) ],
[ AC_MSG_RESULT(no)
CFLAGS="$saved_CFLAGS" ]
)
}])
AC_CONFIG_HEADER(config.h)
AC_PROG_CC
AC_CANONICAL_HOST
@ -113,21 +125,27 @@ AC_ARG_WITH(stackprotect,
use_stack_protector=0
fi ])
if test "$GCC" = "yes" || test "$GCC" = "egcs"; then
CFLAGS="$CFLAGS -Wall -Wpointer-arith -Wuninitialized"
OPENSSH_CHECK_CFLAG_COMPILE([-Wall])
OPENSSH_CHECK_CFLAG_COMPILE([-Wpointer-arith])
OPENSSH_CHECK_CFLAG_COMPILE([-Wuninitialized])
OPENSSH_CHECK_CFLAG_COMPILE([-Wsign-compare])
OPENSSH_CHECK_CFLAG_COMPILE([-Wformat-security])
OPENSSH_CHECK_CFLAG_COMPILE([-Wno-pointer-sign])
OPENSSH_CHECK_CFLAG_COMPILE([-Wno-unused-result])
OPENSSH_CHECK_CFLAG_COMPILE([-fno-strict-aliasing])
AC_MSG_CHECKING(gcc version)
GCC_VER=`$CC -v 2>&1 | $AWK '/gcc version /{print $3}'`
case $GCC_VER in
1.*) no_attrib_nonnull=1 ;;
2.8* | 2.9*)
CFLAGS="$CFLAGS -Wsign-compare"
no_attrib_nonnull=1
;;
2.*) no_attrib_nonnull=1 ;;
3.*) CFLAGS="$CFLAGS -Wsign-compare -Wformat-security" ;;
4.[0123]|4.[0123].*) CFLAGS="$CFLAGS -Wsign-compare -Wno-pointer-sign -Wformat-security -fno-strict-aliasing" ;;
4.*) CFLAGS="$CFLAGS -Wsign-compare -Wno-pointer-sign -Wformat-security -fno-strict-aliasing -Wno-unused-result" ;;
*) ;;
esac
AC_MSG_RESULT($GCC_VER)
AC_MSG_CHECKING(if $CC accepts -fno-builtin-memset)
saved_CFLAGS="$CFLAGS"